18105135823248 has 40 divisors (see below), whose sum is σ = 46847160890400. Its totient is φ = 6025295595264.

The previous prime is 18105135823219. The next prime is 18105135823249. The reversal of 18105135823248 is 84232853150181.

It is a self number, because there is not a number n which added to its sum of digits gives 18105135823248.

It is not an unprimeable number, because it can be changed into a prime (18105135823249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304647453 + ... + 304706876.

It is an arithmetic number, because the mean of its divisors is an integer number (1171179022260).

Almost surely, 2^{18105135823248} is an apocalyptic number.

It is an amenable number.

18105135823248 is an abundant number, since it is smaller than the sum of its proper divisors (28742025067152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18105135823248 is a wasteful number, since it uses less digits than its factorization.

18105135823248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609354959 (or 609354953 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 51.

The spelling of 18105135823248 in words is "eighteen trillion, one hundred five billion, one hundred thirty-five million, eight hundred twenty-three thousand, two hundred forty-eight".